Fill in the Blank
Newton’s first law is also called the law of _____________.
What is inertia?
Which of these best describes Newton’s first law?
a) Objects keep moving unless you stop them
b) For every action, there is an opposite reaction
c) Force equals mass times acceleration
d) Energy cannot be created or destroyed
What is a) Objects keep moving unless you stop them
Explanation: Newton’s first law states that an object in motion stays in motion unless acted on by an outside force.
What is the first step of the Engineering Design Process?
A: What is Identify the problem?
What law explains why a soccer ball won’t move unless kicked?
What is Newton’s first law (law of inertia)?
Explain Newton’s third law in your own words.
For every action, there’s an equal and opposite reaction. For example, when you push on a wall, it pushes back on you.
A _____________ is a push or pull that can change the motion of an object.
What is a force?
What is the unit of force in the metric system?
a) Gram
b) Newton
c) Joule
d) Watt
What is b) Newton
Explanation: Force is measured in newtons (N), named after Sir Isaac Newton.
Why do engineers test and improve their designs?
To make sure the solution works well and fix any problems.
Which law explains why a heavier object needs more force to accelerate?
What is Newton’s second law?
Describe a time you used the Engineering Design Process to solve a problem.
[Student answers will vary.]
According to Newton’s second law, force equals mass times _____________.
What is acceleration?
If you push a box and it moves faster, which law are you demonstrating?
a) First law
b) Second law
c) Third law
d) Law of conservation
What is b) Second law
Explanation: The second law relates force, mass, and acceleration (F = ma).
What comes after identifying the problem in the Engineering Design Process?
What is brainstorming or planning possible solutions?
What law explains why a balloon flies in the opposite direction when air rushes out?
What is Newton’s third law?
Why is Newton’s second law useful for understanding how objects move?
It shows how force, mass, and acceleration are related, helping predict motion.
Newton’s third law says that for every action, there is an equal and _____________ reaction.
What is opposite?
Which step comes first in the Engineering Design Process?
a) Test
b) Improve
c) Identify the problem
d) Create
What is c) Identify the problem
Explanation: Engineers always start by identifying a problem to solve.
Why is understanding force important for engineers?
Engineers need to understand force so they can build safe and effective designs like bridges or cars.
What is the formula for Newton’s second law?
What is F = ma (Force = mass × acceleration)?
Why is understanding force important when designing vehicles?
To ensure safety, stability, and proper performance under different forces.
The Engineering Design Process starts when engineers _____________ a problem they want to solve.
What is identify?
When you jump off a small boat and the boat moves backward, which law is this?
a) Newton’s first law
b) Newton’s second law
c) Newton’s third law
d) Law of gravity
What is c) Newton’s third law
Explanation: The boat moving backward is the equal and opposite reaction.
Give one example of when you used the Engineering Design Process.
[Open-ended student answer, such as building a model bridge or fixing a broken object.]
What happens to an object if no unbalanced force acts on it?
It stays at rest or continues moving at a constant speed (inertia).
Give an example of Newton’s first law in real life.
[A parked car stays still until you drive it; or, a rolling ball keeps going unless something stops it.]